Pinout:

- Knob push: PB8
- Knob A/B: PB6, PB7
- Buzzer PWM: PA15
- Debug SWD: PA13 (IO), PA14 (CK)
- Debug UART: PA9 (Tx), PA10 (Rx)
- OLED reset: PB10
- OLED DC: PB1
- OLED CS: PB0
- OLED MOSI: PA7
- OLED SCLK: PA5
- A0 - Pt100
- A1 - Resistive divider top (filtered 3.3V, 1k + Pt100)


Peripherals:

- TIM2 - Buzzer -> PA15
- TIM3 - Heater PWM -> PA6
- TIM4 - Encoder <- PB6, PB7
- SPI1 MOSI only - OLED (PA5, PA7)
- UART1 - debug
- ADC1 - sensing